Power density optimization for MEMS piezoelectric micro power generator below 100 Hz applications

Research output: Contribution to journalArticle

Abstract

In piezoelectric based micro-power generator (PMPG), electrical energy is generated from mechanical vibration by gaining on the piezoelectric effects. This study concentrates on optimization of the output power density of PMPG at an extremely low frequency (ELF) range below 100 Hz. Taguchi method with eight control parameters and signal-to-noise ratios are utilized in design optimization, COMSOL Multiphysics ver. 4.2 was used for PMPG simulation at optimized parameter. Both Taguchi and S/N ratio analyses show that piezoelectric material selected and its dimensions have the most influence on the generated electric energy density. The simulated PMPG resulting output root mean square voltage was 2.47 V, and power density was 0.376 W/cm3. The PMPG design was fabricated with MEMS technology producing 0.29 W/cm3 power density and supplying 2.19 V DC to the final load. The modeling, simulation and fabricated design show that the PMPG is capable of replacing traditional Lithium Iodide (Li-Ion) batteries powering small electronic gadgets, such as biomedical implant and wearable electronics in frequency range of 25–27 Hz.

Original languageEnglish
Pages (from-to)1-14
Number of pages14
JournalMicrosystem Technologies
DOIs
Publication statusAccepted/In press - 7 Nov 2017

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electric generators
microelectromechanical systems
MEMS
radiant flux density
Taguchi methods
optimization
Piezoelectricity
Piezoelectric materials
Iodides
Lithium
Signal to noise ratio
Computer simulation
Electric potential
frequency ranges
extremely low frequencies
output
supplying
design optimization
electric power
electronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

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title = "Power density optimization for MEMS piezoelectric micro power generator below 100 Hz applications",
abstract = "In piezoelectric based micro-power generator (PMPG), electrical energy is generated from mechanical vibration by gaining on the piezoelectric effects. This study concentrates on optimization of the output power density of PMPG at an extremely low frequency (ELF) range below 100 Hz. Taguchi method with eight control parameters and signal-to-noise ratios are utilized in design optimization, COMSOL Multiphysics ver. 4.2 was used for PMPG simulation at optimized parameter. Both Taguchi and S/N ratio analyses show that piezoelectric material selected and its dimensions have the most influence on the generated electric energy density. The simulated PMPG resulting output root mean square voltage was 2.47 V, and power density was 0.376 W/cm3. The PMPG design was fabricated with MEMS technology producing 0.29 W/cm3 power density and supplying 2.19 V DC to the final load. The modeling, simulation and fabricated design show that the PMPG is capable of replacing traditional Lithium Iodide (Li-Ion) batteries powering small electronic gadgets, such as biomedical implant and wearable electronics in frequency range of 25–27 Hz.",
author = "Alrashdan, {Mohd H.S.} and Hamzah, {Azrul Azlan} and {Yeop Majlis}, Burhanuddin",
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N2 - In piezoelectric based micro-power generator (PMPG), electrical energy is generated from mechanical vibration by gaining on the piezoelectric effects. This study concentrates on optimization of the output power density of PMPG at an extremely low frequency (ELF) range below 100 Hz. Taguchi method with eight control parameters and signal-to-noise ratios are utilized in design optimization, COMSOL Multiphysics ver. 4.2 was used for PMPG simulation at optimized parameter. Both Taguchi and S/N ratio analyses show that piezoelectric material selected and its dimensions have the most influence on the generated electric energy density. The simulated PMPG resulting output root mean square voltage was 2.47 V, and power density was 0.376 W/cm3. The PMPG design was fabricated with MEMS technology producing 0.29 W/cm3 power density and supplying 2.19 V DC to the final load. The modeling, simulation and fabricated design show that the PMPG is capable of replacing traditional Lithium Iodide (Li-Ion) batteries powering small electronic gadgets, such as biomedical implant and wearable electronics in frequency range of 25–27 Hz.

AB - In piezoelectric based micro-power generator (PMPG), electrical energy is generated from mechanical vibration by gaining on the piezoelectric effects. This study concentrates on optimization of the output power density of PMPG at an extremely low frequency (ELF) range below 100 Hz. Taguchi method with eight control parameters and signal-to-noise ratios are utilized in design optimization, COMSOL Multiphysics ver. 4.2 was used for PMPG simulation at optimized parameter. Both Taguchi and S/N ratio analyses show that piezoelectric material selected and its dimensions have the most influence on the generated electric energy density. The simulated PMPG resulting output root mean square voltage was 2.47 V, and power density was 0.376 W/cm3. The PMPG design was fabricated with MEMS technology producing 0.29 W/cm3 power density and supplying 2.19 V DC to the final load. The modeling, simulation and fabricated design show that the PMPG is capable of replacing traditional Lithium Iodide (Li-Ion) batteries powering small electronic gadgets, such as biomedical implant and wearable electronics in frequency range of 25–27 Hz.

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